Dresden 2026 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 7: Poster Magnetism I

MA 7.54: Poster

Montag, 9. März 2026, 09:30–12:30, P2

Current-induced Spin-Orbit Torque effects in RuO₂ thin films — •Niklas Schmolka, Florian Knossalla, Maik Gärner, Karsten Rott, and Günter Reiss — Bielefeld University, Germany

Current-induced manipulation of the antiferromagnetic order offers a promising route toward ultrafast and energy-efficient spintronic memory devices [1]. Results that are consistent with Néel vector switching could be a hint for antiferromagnetism in RuO₂ [2].

Here, we use eight-terminal devices to investigate Spin-Orbit Torque effects in RuO₂ thin films. We study bilayers consisting of RuO₂|Pt and RuO₂|W where Pt and W act as heavy-metal layers generating Spin-Orbit Torques. We observe signatures of reversible Néel vector reorientation through Hall measurements, with the two sample systems showing opposite responses consistent with the opposite Spin Hall Angles of Pt and W [3].

Additionally we measure pure RuO₂ films and examine the temperature dependence of the switching mechanism to further identify magnetic contributions and disentangle possible non-magnetic effects [4].

[1] T. Jungwirth et al., Nature Nanotechnology 11, 231-241 (2016)

[2] Y. Zhang et al., Nature Communications 16, 5646 (2025)

[3] L. Liu et al., Appl. Phys. Lett. 101 122404 (2012)

[4] T. Matalla-Wagner et al., Phys. Rev. Research 2, 033077 (2020)

Keywords: Altermagnets; Switching; RuO2; Spintronics; Spin-orbit Torque